Помогите пожалуйста
Поместите глаголы в скобки в правильной форме.
 
1. Nick … (fly) his kite while Dan… (eat) a sandwich.

2. I promise I (not/be) late.

3. Rick isn’t here. He … (go) shopping.

4. Ken … (look) very stressed.

Yes. He … (study) a lot these days.

5. She … (call) an hour ago.

6. If people … (invent) new fuel, cars … (not/pollute) the air.

7. Why … (you/be) in such a hurry?

I am worried. My exam … (start) in ten minutes.

8. … (you ever/see) this film?

9. He … (work) here for over ten years.

10. If he …(have) a lot of money, he … (buy) a computer.